1 Introduction
1.1 General
Isotherm refrigerators are specially designed to operate in tough
marine environments. They are fi tted with a fully hermetic,
leak-free compressor, they offer the lowest possible power
consumption and noise level. All models are simple to install.
They can withstand an angle of heel up to 30°, for a short time.
To ensure that your Isotherm fridge operates as effi ciently as
possible, please follow these general guidelines:
• Unnecessary opening of the fridge door will increase power
consumption.
• Good ventilation of the compressor and condenser unit will
reduce power consumption.
• The electrical system should be in good condition. Inspect
batteries and charging levels regularly. Always use a separate
starter battery for the engine. Follow carefully the guidelines
regarding electrical able areas and fuse placements.
• Keep the inside of the fridge and freezer clean and dry.
Remove any water from condensation that may have collected
in the plastic baskets.
• Keep the door slightly open to air the refrigerator and freezer
when leaving the boat for any length of time. (Fig. 1 and 2)
1.2 Safety and precautions
For your own and others safety, read this fi rst.
I.3 Environmental markings
The symbol on the product, or on the documents
accompanying the product, indicates that this product may
not be treated as household waste. Instead it shall be handed
over to the applicable collection point for recycling of electrical
and electronic equipment. Disposal must be carried out in
accordance with local environmental regulations for waste
disposal.
For more detailed information about treatment, recovery and
recycling of this product, please contact your local city offi ce,
your household waste disposal service or the shop where you
purchased the product.
Danger!
Only connect the device to a 110 - 230 Volt power
outlet installed according to regulations, being accordingly
fused.
When connected to mains power, ensure that the power
supply is equipped with an earth safety automatic switch, a
”ground fault circuit interrupter”.
Danger!
Never touch bare electrical wiring connected to
the AC power supply.
Do not use the device if the connector cables show visible
damage.
Never connect battery charger direct to the refrigeration
system.
A battery charger
must
be connected to the battery, never
direct to the refrigeration system.
Danger!
In addition to acid, a newly-charged battery
contains explosive gas.
Never cover the ventilation openings for the compressor
unit.
Refrigerant may never be let out in the air.
2 Installation instructions
Many boats have a space which is intended for a fridge. The
Isotherm Cruise fridge has been designed to suit the general
dimensions normally used for this purpose.
The compressor should normally stand upright in the boat, but
will operate at an angle of heel up to 30° and for short periods
even more. The compressor on CR200 is attached by its rear
side.
The refrigerator/freezer unit has a three side mounting fl ange to
fasten the unit in place. It must also be standing on its feet.
See installation dimensions on fi g. 10.
Avoid mounting close to a heat source, like gas ovens and
heaters. Also avoid a position allowing direct sunshine on the
refrigeration/freezer unit.
The mounting position should be dry and protected from
splashing water.
2.1 Ventilation
It is very important that the compressor/condenser unit is
well ventilated and that cold air can enter at the bottom,
pass behind the fridge and warm air can leave at the top in
the area where it is mounted. The natural fl ow of air from
below and upwards behind the fridge can be increased by
arranging ventilation openings at the rear.
Make sure there is a free area of 23 - 28 sq.in. below and behind
the refrigerator/freezer to allow ventilation air to pass behind
from below. See fi g 5.
2.2 Electrical connections/wiring for power supply
CR200 is available in two versions, one is equipped with a
Danfoss 12-24 VDC electronic unit and the other is equipped
with a AC-DC electronic unit. It is important that following points
are considered:
DC (12 or 24 volt)
The electronic unit must always be connected direct to the
battery poles. Connect the positive/plus to + and the negative/
minus to - on the battery. Without proper positive/negative
connections, the electronic unit will not work - it is protected
against reverse battery connection.
For protection of the installation, a fuse must be mounted in the
positive cable as close to the battery as possible.
A 15A fuse for a 12V power supply and a 7.5A fuse for a 24 volt
circuit are recommended. If a breaker box connection is used, it
should be rated to a minimum of 20A.
Avoid extra junctions in the power supply system to prevent
voltage drop from affecting the battery protection setting.
The light is connected to battery power on the electronic unit and
the bulb must be selected 12 or 24 volt. Both types are included
in the delivery.
See wiring diagram fi g. 8
AC (100-240 volt)
The live and neutral wires must be connected to the terminals
marked
L
and
N
on the electronic unit. Nominal voltages from
100 to 240 VAC 50/60 Hz. Upper safety cut out limit is 270 VAC
and lower limit is 80 VAC.Earth connection is to be placed on the
compressor foot near the electronic unit. There is a hole drilled
in the foot for this purpose, use a 5/32” screw and nut and a ring
cable shoe on the wire.
Connection of mains power plug must fulfi l valid electrical safety
regulations and properly fused with 4A. Wire gauge, AWG18.
